Manufacture of journal-box keys



(No Model.)

c. T. SGHOEN. MANUFACTURE OF JOURNAL BOX KEYS.

Patented Apr. 29, 1890.

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CHARLES T. SCHOEN, OF PHILADELPHIA, PENNSYLVANIA.

MANUFACTURE OF JOURNAL-BOX KEYS.

SPECIFICATION forming part of Letters Patent No. 426,604, dated April29, 1890. Application filed January 24, 1890- .Serial No. 337,981. (Nomodel.)

To all whom it may concern.-

Be it known that I, CHARLES T. SoHonN, a citizen of the United States,residing at Phila delphia, in the county of Philadelphia and State ofPennsylvania, have invented a certain new and useful Improvement in theManfacture of Journal-Box Keys, of which the following is a full, clear,and exact description.

The keys for the support of the brasses in journal-boxes, so far as I amaware, have heretofore been made as-castings, their shape andconstruction rendering their production by forging or otherwise ratherimpracticable.

Obviously a wrought-metal key has many advantages over a cast-metal key;and it is the object of my invention to produce a wrought-metal keywhich may be manufactured and sold at about the cost of castmetal keys.

To this end my invention consists in the manufacture of wrought-metalkeys for journal-boxes by first making a pile of the approximate shapeof the key, then heating the same to a Welding heat, and then subjectingthe thus-heated pile to the action of suitable dies or a press forgiving the ultimate shape.

The invention also consists in a wroughtmetal key for journal-boxesconstructed substantially as described.

In the accompanying drawings, illustrating my invention, in the severalfigures of which like parts are similarly designated, Figures 1 and 2are respectively a plan and cross-section of foundation-blank stock.Figs. 3 and 4 are respectively a plan and cross-section of theside-blank stock. Figs. 5 and 6 are respectively a plan andcross-section of stock for forming the pile-tie and ultimately the backrib. Fig. 7 is a perspective view of the pile constructed from the stockjust described. Fig. 8 is a perspective view of the finished keyproduced from this pile; and Fig. 9 is a perspective view of awrought-metal key 0011- structed in accordance with my invention, butomitting the back rib.

In practicing my invention I take stock of the general outlinerepresented in Figs. 1 and 2, the same being rolled metal having acentral flat rib a, edge flanges b, and intervening grooves c, and cutthe same into suitable keylengths, (see A, Fig. 7,) which I designateherein the base-piece. A bar cl, which is triangular in general outline,(two of the angles being cut off, thus truncating the triangle, as itwere,) is next cut into suitable lengths B B, which constitute the sidepieces, and are shorter than the length of the basepiece A bysubstantially the distance repre sented in Fig. 7. These side pieces cutfrom the stock d fit tightly into the grooves c c of the base-piece. Inext cut from the stock e, which, as will be observed, has the sideflanges f, a binder O, as represented in Fig. 7, and this binder C isdriven onto the back of the pile, as represented in Fig. 7. The pile asthus prepared is then heated to a welding heat and then subjected to theaction of suit able dies, by which the several parts are welded togetherto form the key. After the key is thus formed that portion of the bottomwhich was the blank A is cut away centrally, so as to leave the hooks g.The binder O by the welding operation is transformed into the rib h; butas this rib is not usedin some forms of keys I may omit it in theformation of my improved wrought-metal key, and I have indicated in Fig.9 the key thus constructed.

Very obviously the portion of the device which is excised between thehooks may be so cut out either before or after welding.

Keys for journal-boxes thus constructed of wrought metal may be producedat about the cost of cast metal and are very much more durable and verymuch more satisfactory in practice, as will be obvious to those skilledin the art. They may be interchanged with the keys now commonly used.

lVhat I claim is 1. The art of manufacturing Wrought-metal keys forjournal-box brasses, consisting in binding together into the approximateshape of a finished key a basepiece having a central rib, edge flanges,and intermediate grooves and side pieces having a general triangularcross-section and fitted in said grooved base and of less length thanthe base-piece, then raising the pile to a welding heat, and thensubjecting the thus-heated pile to the action of dies to give the finalshape, substantially as described.

2. The art of manufacturing wroughtenetal keys for journal-box brasses,consisting in forming a pile of the approximate shape of the finishedkey from a base-piece having a 3. As an improved article of manufacture,a wrought-metal key for j onrnal-box brasses, constructed from adie-pressed pile, substantially as described.

In testimony whereof I have hereunto set my hand this 23d day ofJanuary, A. D. 1890.

CHARLES T. SOHOEN. XVitnesses:

WILLIAM H. SCHOEN, J11, EDWARD P. HIPPLE.

